2020 tax payment rejection

[PHRCPA]

Client just received notice his tax payment electronically filed was rejected by the IRS. When I went to the EF Center to see if I saw the rejection, it was not there, but under the Accepted tab it shows the payment 2X, once on the extension line and once on the F1040 line. There was no payment on the F4868, it was zero.

[Just-Lisa-Now-]

The return itself was accepted and teh bank account info was sent along with the return to IRS, why IRS rejected the payment, the program won't show you that.

Im curious though, does the Form 9325 say the payment was accepted?